00426nam a2200145 a 450000500170000000800410001724500270005826000440008530000310012944000210016050000200018165000330020165000350023485200110026920200107025318.0090404s19uu    xx            00    eng d10aPhysics and mechanics.0 aSingapore :bRegency Pub. Group,c1993.  a(42) p. : ill. (part col.) 0aWorld of science  aIncludes index.  aPhysicsxJuvenile literature  aMechanicsxJuvenile literature  7OLOPSC